diff --git a/src/main/scala/org/scalacoin/protocol/CommonStructures.scala b/src/main/scala/org/scalacoin/protocol/CommonStructures.scala
index 2c815342e1..c3fac388f3 100644
--- a/src/main/scala/org/scalacoin/protocol/CommonStructures.scala
+++ b/src/main/scala/org/scalacoin/protocol/CommonStructures.scala
@@ -21,7 +21,7 @@ trait VarInt {
   def size : Long
 
   def hex = size match {
-    case 1 => num.toHexString
+    case 1 => if (num.toHexString.size == 1) "0" + num.toHexString else num.toHexString
     case 3 => "fd" + ScalacoinUtil.littleEndianToBigEndian(ScalacoinUtil.longToHex(num))
     case 5 => "fe" + ScalacoinUtil.littleEndianToBigEndian(ScalacoinUtil.longToHex(num))
     case _ => "ff" + ScalacoinUtil.littleEndianToBigEndian(ScalacoinUtil.longToHex(num))
diff --git a/src/test/scala/org/scalacoin/crypto/TransactionSignatureSerializerTest.scala b/src/test/scala/org/scalacoin/crypto/TransactionSignatureSerializerTest.scala
index a96d748839..d6d447f087 100644
--- a/src/test/scala/org/scalacoin/crypto/TransactionSignatureSerializerTest.scala
+++ b/src/test/scala/org/scalacoin/crypto/TransactionSignatureSerializerTest.scala
@@ -7,7 +7,7 @@ import org.bitcoinj.core.Transaction.SigHash
 import org.bitcoinj.params.TestNet3Params
 import org.bitcoinj.script.{ScriptChunk, ScriptBuilder}
 import org.scalacoin.protocol.script.{UpdateScriptPubKeyAsm, UpdateScriptPubKeyBytes, ScriptPubKey, ScriptPubKeyFactory}
-import org.scalacoin.protocol.transaction.{UpdateTransactionInputs, TransactionOutput, UpdateTransactionOutputs, Transaction}
+import org.scalacoin.protocol.transaction._
 import org.scalacoin.script.ScriptOperationFactory
 import org.scalacoin.script.bitwise.OP_EQUALVERIFY
 import org.scalacoin.script.constant._
@@ -56,6 +56,7 @@ class TransactionSignatureSerializerTest extends FlatSpec with MustMatchers {
     val scriptPubKey = bitcoinjScriptToScriptPubKey(multiSigScript)
 
     val creditingTx = Transaction.factory("01000000013df681ff83b43b6585fa32dd0e12b0b502e6481e04ee52ff0fdaf55a16a4ef61000000006b483045022100a84acca7906c13c5895a1314c165d33621cdcf8696145080895cbf301119b7cf0220730ff511106aa0e0a8570ff00ee57d7a6f24e30f592a10cae1deffac9e13b990012102b8d567bcd6328fd48a429f9cf4b315b859a58fd28c5088ef3cb1d98125fc4e8dffffffff02364f1c00000000001976a91439a02793b418de8ec748dd75382656453dc99bcb88ac40420f000000000017a9145780b80be32e117f675d6e0ada13ba799bf248e98700000000")
+
     val output = creditingTx.outputs(1)
     val address = new org.bitcoinj.core.Address(params, "n3CFiCmBXVt5d3HXKQ15EFZyhPz4yj5F3H");
     val addressHash = new ScriptConstantImpl(address.getHash160.toList)
@@ -63,18 +64,25 @@ class TransactionSignatureSerializerTest extends FlatSpec with MustMatchers {
       UpdateScriptPubKeyAsm(Seq(OP_DUP, OP_HASH160, addressHash, OP_EQUALVERIFY, OP_CHECKSIG))
     )
 
-    val txOut = TransactionOutput.factory(output.value,outputScript)
-    //val txIn = TransactionInput.factory(txOut)
-    val spendingTx = Transaction.empty.factory(
-      UpdateTransactionOutputs(Seq())
-    ).factory(UpdateTransactionInputs(Seq()))
+    ScalacoinUtil.encodeHex(outputScript.bytes)
+    val spendingTxOut : TransactionOutput = TransactionOutput.factory(output.value,outputScript)
+    val spendingTxIn : TransactionInput = TransactionInput.factory(spendingTxOut,creditingTx)
+
+    val spendingTxWithOutput = Transaction.empty.factory(
+      UpdateTransactionOutputs(Seq(spendingTxOut))
+    )
+    println(spendingTxWithOutput.bytes)
+    val spendingTx = spendingTxWithOutput.factory(UpdateTransactionInputs(Seq(spendingTxIn)))
+    println(spendingTxIn.bytes)
+    println(spendingTx.bytes)
 
 
-
-    val txSignatureSerializer = new BaseTransactionSignatureSerializer(Transaction.empty)
+    val txSignatureSerializer = new BaseTransactionSignatureSerializer(spendingTx)
 
     val bitcoinjSigHash = createBitcoinjMultiSigScriptHashForSig
-    txSignatureSerializer.serialize(0,scriptPubKey,SIGHASH_ALL) must be (bitcoinjSigHash)
+
+    val sigBytes = txSignatureSerializer.serialize(0,scriptPubKey,SIGHASH_ALL)
+     ScalacoinUtil.encodeHex(sigBytes) must be (bitcoinjSigHash)
   }